Improvement in wire mattresses



UNITED STATEs PATENT OFFICE. a

DAVID J. POWERS, OF CHICAGO, ILLINOIS.

IMPRovEMEN'r IN WIRE MAT-messes.

Specification forming part of Letters Patent No. 144,564, dated November 11, 1873; application filed April 2s, 1873.

To all whom it may concern:

Be it known that I, DAVID J. POWERS, of Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Wire Mattresses, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, in which there is a single figure representing a plan view.

My invention consists in constructing a wire mattress or bed-bottom, with a series of zigzag wires placed side by side, and so arranged that the angles of adjoining Wires are opposite each other and near to each other, and in connecting such zigzag Wires together at their angles by means of spiral-wire coils, subst-antially as specified. The zigzag wires and the connecting spiral-Wire coils are to be connected at their ends to a suitable frame, and properly strained thereon for use, in the usual manner.

In the drawings,A represents the ends and B the sides of the frame, to which frame the wires and coils are suitably secured. a represents the zigzag wires. They should be made from higlrspring Wire, to give them elasticity,

and may be of any suitable size. I use number fourteen or iifteen wire, usually.

The vangles b of these wires may be about one and a half or two inches apart longitudinally. I prefer to so bend these wires that the spaces c, between the wires, will be diaat the same time are so connected together that they cannot, in use, move independently of each other.

These coils d may be made of number twenty spring-wire; and each coil may consist of a single coiled wire, or of two or more coiled wires, according to the size of wire used and the strength required. The longitudinal strength 1 of the fabric depends chieiiy upon the size and form of the zigzag wires a. The coils d must be strong enough to resistany lateral strain,

and they can be readily inserted in place, so

as to encircle the wires a at the angles b by turning the coil, as one coil is turned into"` another.

What I claim as new is as follows:

A wire mattress or bed-bottom, composed i of zigzag wires a, connected together at their angles b by means of wire-coils d, substantially as specified. i

\ ,n DAVID J. POWERS.

Witnesses: n n

E. A. WEsT, t QW. BOND. 

